initial commit

app/src/main/java/com/stardust/scriptdroid/file/FileChooser.java

@@ -0,0 +1,65 @@
+package com.stardust.scriptdroid.file;
+
+import android.app.Activity;
+import android.content.ActivityNotFoundException;
+import android.content.ContentResolver;
+import android.content.Intent;
+import android.net.Uri;
+
+import java.io.FileNotFoundException;
+import java.io.InputStream;
+
+import static android.app.Activity.RESULT_OK;
+
+/**
+ * Created by Stardust on 2017/1/23.
+ */
+
+public class FileChooser {
+
+    public interface FileManagerNotFoundHandler {
+        void handle(ActivityNotFoundException e, String mimeType);
+    }
+
+    public interface OnFileChoseListener {
+        void onFileChose(InputStream inputStream);
+    }
+
+    private static final int FILE_CHOOSE = 1209;
+    private Activity mActivity;
+
+    private OnFileChoseListener mOnFileChoseListener;
+
+    public FileChooser(Activity activity) {
+        mActivity = activity;
+    }
+
+    public void setOnFileChoseListener(OnFileChoseListener onFileChoseListener) {
+        mOnFileChoseListener = onFileChoseListener;
+    }
+
+
+    public void startFileManagerToChoose(String mimeType, FileManagerNotFoundHandler handler) {
+        Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
+        intent.setType(mimeType);
+        intent.addCategory(Intent.CATEGORY_OPENABLE);
+        try {
+            mActivity.startActivityForResult(Intent.createChooser(intent, "选择一个文件"), FILE_CHOOSE);
+        } catch (ActivityNotFoundException ex) {
+            handler.handle(ex, mimeType);
+        }
+    }
+
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        if (requestCode == FILE_CHOOSE && resultCode == RESULT_OK) {
+            Uri uri = data.getData();
+            ContentResolver cr = mActivity.getContentResolver();
+            try {
+                InputStream inputStream = cr.openInputStream(uri);
+                mOnFileChoseListener.onFileChose(inputStream);
+            } catch (FileNotFoundException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+}